Trailer Wiring Harness & Parts
- Truck-Lite®Round Grommet Mount O-Ring (97933)Universal Round Grommet Mount O-Ring by Truck-Lite®. Rubber. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by...Made of high impact, chemical resistant plasticMounted by four holes on 5-1/2'' diameter circle$5.09
- Truck-Lite®Round Stud Mount Light Housing (97980)Universal Round Stud Mount Light Housing by Truck-Lite®. Steel. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it is resistant to dents, chips, and fading. The...Durable synthetic rubber housing resists corrosionIncludes mounting hardware$22.76
- Truck-Lite®Signal-Stat Series Bolt-on Mount Mounting Bracket for Signal-Stat Rectangular Lights (9179)Universal Signal-Stat Series Bolt-on Mount Mounting Bracket for Signal-Stat Rectangular Lights by Truck-Lite®. Steel. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials,...Use safeguard for extra light protectionFeatures chrome-plated die-cast with mounting holes$16.36
- Truck-Lite®Signal-Stat Series Round Grommet Mount O-Ring for Signal-Stat Round Lights (9180)Universal Signal-Stat Series Round Grommet Mount O-Ring for Signal-Stat Round Lights (9180) by Truck-Lite®. Rubber. Want to raise your trailer's visibility? This Truck-Lite product just fits the bill. Made from top-quality materials, it...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$7.50
- Truck-Lite®Twist Bulb Socket (94940)Universal Twist Bulb Socket (94940) by Truck-Lite®. This product is made from high-grade materials to meet the strictest standards of high quality. Designed with the utmost care and attention to detail, this Truck-Lite product ensures...18 gauge wiresDesigned to deliver trouble-free, consistent performance$7.55
- Buyers®2" Marker Lights Black Grommets (5622050)Universal 2" Marker Lights Black Grommets by Buyers®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...High quality at an affordable priceExpertly made from premium materials$10.29
- Buyers®DOT Light Plug (5620350)Universal DOT Light Plug (5620350) by Buyers®. Termination 1: 3-Pin Right Angle Male PL-3Plug. Termination 2: Stripped Power Leads and #10 Ring on Ground. This top-grade product is expertly made in compliance with stringent industry...High quality at an affordable priceExpertly made from premium materials$10.76
- Buyers®Light Box (LB8133)Universal Light Box (LB8133) by Buyers®. Triple. Face Cutout Shape: Oval. Material: Gray Primed Steel. Buyers Products Vertical Triple Oval Light Boxes are designed to mount 6" oval DOT lights. Light boxes feature a Gray primed steel...Designed for 6" oval DOT lightsReady to be painted to suit your application$114.27
- Buyers®Light Box (LB6123SST)Universal Light Box (LB6123SST) by Buyers®. Dual. Face Cutout Shape: Round. Material: Stainless Steel. Buyers Products Dual Round Light Boxes are designed to mount 4" round DOT lights. If you're looking for a quality product that will...Designed for 4" round DOT lightsHigh quality at an affordable price$93.01
- Buyers®Light Box (LB383SL)Universal Light Box (LB383SL) by Buyers®. Single with Side Light. Face Cutout Shape: Oval. Material: Black Powder Coated Steel. Buyers Products Single Oval Light Boxes are designed to mount 6" oval DOT lights. If you're looking for a...Designed for a range of DOT-required lightsHigh quality at an affordable price$44.44
- Buyers®Light Box (LB383ALSM)Universal Light Box (LB383ALSM) by Buyers®. Single. Face Cutout Shape: Oval. Material: Smooth Aluminum. Buyers Products Single Oval Light Boxes are designed to mount 6" oval DOT lights. If you're looking for a quality product that will...Designed for a range of DOT-required lightsHigh quality at an affordable price$51.17
- Buyers®Light Box (LB383)Universal Light Box (LB383) by Buyers®. Single. Face Cutout Shape: Oval. Material: Black Powder Coated Steel. Buyers Products Single Oval Light Boxes are designed to mount 6" oval DOT lights. If you're looking for a quality product that...Designed for a range of DOT-required lightsHigh quality at an affordable price$41.14
- Buyers®Light Box (LB3163)Universal Light Box (LB3163) by Buyers®. Dual. Face Cutout Shape: Oval. Material: Black Powder Coated Steel. Buyers Products Dual Oval Light Boxes are designed to mount 6" oval DOT lights. If you're looking for a quality product that...Designed for 6" oval DOT lightsHigh quality at an affordable price$69.02
- Buyers®Single DOT Light Bracket (LB1)Universal Single DOT Light Bracket (LB1) by Buyers®. Face Cutout Shape: Oval. Material: Black Powder-Coated. Buyers Products DOT Light Mounting Brackets from different finishes to help you satisfy DOT requirements for the mounted lights...Brackets offer easy mounting of your DOT-approved lightsCorrosion-resistant stainless steel or black powder-coated steel$12.03
- C.E. Smith®Aluminum License Plate Bracket (26053A)Aluminum License Plate Bracket by C.E. Smith®. Upgrade the appearance of your trailer with an aluminum tread plate license plate bracket. Fits standard left side DOT brake/tail lamps. No mounting hardware required. Installs between...Ideal to make trailer towing safer and easierMade from the highest-quality materials to last for years to come$13.37
- Mopar®Multi-Purpose Grommet (MD095402)Multi-Purpose Grommet (MD095402) by Mopar®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Carefully crafted from premium materialsExcellent corrosion and wear resistance$5.70
- Optronics®5-Flat to 7-Round Way Adaptor Plug (A57WBP)Universal 5-Flat to 7-Round Way Adaptor Plug by Optronics®. 12-24V DC. Converts two vehicle 7-way round blade connector to 5-way flat pin connector. This product is made of high-quality materials to serve you for years to come. Designed...Designed with innovative manufacturing techniquesBuilt strong to provide long-lasting service life$20.53
- Optronics®Galaxy Series Single Fixture Recess Mount Light Mount (240047171P)Universal Galaxy Series Single Fixture Recess Mount Light Mount by Optronics®. 1 Piece. Plastic. This product is made of high-quality materials to serve you for years to come. This product designed using state-of-the-art technology and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$17.91
- Optronics®M1 Series Flange Mount Bezels (00212327P)Universal M1 Series Flange Mount Bezels by Optronics®. This product is made of high-quality materials to serve you for years to come. This product designed using state-of-the-art technology and with customers in mind. It will meet your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.67
- Race Sport®Rectangular Light Cluster for Three 2" Round Side Marker Lights (RS-400SS)Universal Rectangular Light Cluster for Three 2" Round Side Marker Lights (RS-400SS) by Race Sport®. Stainless Steel. This product is made of high-quality materials to serve you for years to come. This product designed using...Heavy duty powder coated stainless steelIndividually wrapped for finish protection$54.99
- Race Sport®Rectangular Light Cluster for Three 2" Round Side Marker Lights (RS-400)Universal Rectangular Light Cluster for Three 2" Round Side Marker Lights (RS-400) by Race Sport®. Stainless Steel. This product is made of high-quality materials to serve you for years to come. This product designed using...Heavy duty powder coated stainless steelIndividually wrapped for finish protection$24.99
- Race Sport®Rectangular Light Cluster for Three 2.5" Round Side Marker Lights (RS-400HD)Universal Rectangular Light Cluster for Three 2.5" Round Side Marker Lights by Race Sport®. Stainless Steel. This product is made of high-quality materials to serve you for years to come. This product designed using state-of-the-art...Heavy duty powder coated stainless steelIndividually wrapped for finish protection$44.99
- Roadmaster®Bulb and Socket Kit for Towed Vehicle Taillights (155)Universal Bulb and Socket Kit for Towed Vehicle Taillights by Roadmaster®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...High quality at an affordable priceExpertly made from premium materials$80.28
- TRUX®Rear Center Panel with Three 4" Light Cutouts (TU-9209)Universal Rear Center Panel with Three 4" Light Cutouts by TRUX®. 1 Piece. This rear center panel is made of high-quality materials to serve you for years to come. This product designed using state-of-the-art technology and with...3.75" Bolt Spacing430 Mirror Shine Stainless Steel$209.47
- Tie Down Engineering®3"x2.25" Bolt-on Mount Bracket (44705)Universal 3"x2.25" Bolt-on Mount Bracket by Tie Down Engineering®. 1 Piece. Steel. Want to raise your trailer's visibility? This Tie Down Engineering product just fits the bill. Made from top-quality materials, it is resistant to dents,...Precise manufacturing and high-grade materialsMade to guarantee exceptional reliability$13.15
- Tie Down Engineering®Driver Side 4.9"x3.1" Bolt-on Mount Bracket (44715L)Universal 4.9"x3.1" Bolt-on Mount Bracket (44715L) by Tie Down Engineering®. 1 Piece. Steel. Want to raise your trailer's visibility? This Tie Down Engineering product just fits the bill. Made from top-quality materials, it is resistant...Precise manufacturing and high-grade materialsMade to guarantee exceptional reliability$26.42
- Tie Down Engineering®Passenger Side 4.9"x3.1" Bolt-on Mount Bracket (44715R)Universal 4.9"x3.1" Bolt-on Mount Bracket (44715R) by Tie Down Engineering®. 1 Piece. Steel. Want to raise your trailer's visibility? This Tie Down Engineering product just fits the bill. Made from top-quality materials, it is resistant...Precise manufacturing and high-grade materialsMade to guarantee exceptional reliability$29.08
- Truck-Lite®44 Series Flange Mount Mount (44750)Universal 44 Series Flange Mount Mount by Truck-Lite®. 1 Piece. This product is made of high-quality materials to serve you for years to come. This product designed using state-of-the-art technology and with customers in mind. It will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$6.80
- Truck-Lite®60 Series Flange Mount Mount (60750)Universal 60 Series Flange Mount Mount by Truck-Lite®. 1 Piece. This product is made of high-quality materials to serve you for years to come. This product designed using state-of-the-art technology and with customers in mind. It will...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$6.28
- Truck-Lite®Connector Kit (77850)Universal Connector Kit (77850) by Truck-Lite®. 1 Piece. This product is made of high-quality materials to serve you for years to come. This product designed using state-of-the-art technology and with customers in mind. It will meet...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$14.00
Trailer tail lights, brake lights, and turn signals are one of the most important safety accessories that are required by law. Without these lights, other drivers and pedestrians will have a hard time noticing your trailer and understanding your maneuvers. This is because the trailer you're pulling is usually wide enough to obscure your vehicle's lights. Trailer lights are designed to perform the same functions as your vehicle's lights. They help other road users notice your trailer in time and warn them that you are turning, stopping, changing directions or lanes, etc. So if you want to avoid collisions, make sure your trailer lights are in top condition.
Trailer lights tend to take a beating. They burn out over time or corrode when exposed to harsh elements. You can also damage them when loading and unloading your cargo. However, the most common issues with trailer lights are faulty wiring harnesses and connectors, loose and frayed wire connections, etc. Need high-quality electrical accessories to restore the operation of your trailer lights? Choose from our selection of premium wiring harnesses, connectors, lighting modules, and other related products. The electrical accessories stocked in our online store also come in handy when equipping your trailer with new lights.
As a rule, trailer wiring consists of a plug connected to the vehicle's lighting circuit, a connector on the trailer that matches the plug, and a wiring harness that runs along the trailer's frame. On our website, you'll find all these accessories and many more. No matter whether you're upgrading to LED tail lights, installing tow lights, or anything in between, we have everything you need to make wiring easy. We offer wiring harnesses and connectors from the most trusted manufacturers in the industry to guarantee they deliver exceptional quality and dependability. Made using heavy-duty materials and up-to-date equipment, they are durable enough to withstand high temperatures, vibration, and other demanding conditions.
Depending on the functions you need, you can choose from connectors with four to seven pins. Standard 4-way connectors are ideal for the basic hookup. They are designed to ensure reliable transfer of power to the trailer tail lights, brake lights and turn signals, and feature one pin for the ground wire. This type of connectors is used mostly on lightweight trailers that are not equipped with brakes or other accessories that require power. However, trailers with a capacity of more than 3,000 lbs have brakes, so they require a connector with at least 5 pins. 5-Way connectors are very similar to 4-way connectors but have an additional pin that provides power to actuate electric brakes or disable hydraulic brakes.
6-Way connectors also allow you to hook up three basic trailer lights and have a ground pin. Two other pins are usually used for electric brakes and 12V hot lead. 7-Way connectors are the most widespread connector type since they are found on most modern pickups, SUVs, and vans. They provide all the functions of the 6-way connectors while also having an additional pin for the back-up lights. With so many different types of connectors, chances are the connector on your vehicle will differ from the one on your trailer. In this case, you need an adapter that will help create a connection between two different connector types. Also, keep in mind that sometimes with an adapter you may need additional wiring.